Okla. Stat. tit. 12A, § 12A-5-115: Statute of Limitations

Statute of Limitations.

An action to enforce a right or obligation arising under this

article must be commenced within one (1) year after the expiration

date of the relevant letter of credit or one (1) year after the

cause of action accrues, whichever occurs later. A cause of action

accrues when the breach occurs, regardless of the aggrieved party's

lack of knowledge of the breach.